Perhaps you should try some spelling variations:
thien cac » hien cac, thien cau, thieu cac
toc sach » hoc sach, doc sach, thuoc sach
danh van » doanh van, dang van, dinh van
vien cac » vien bach, vien dai, vien da
ve triet » va trien, su triet
sach ty » sach y, sach tu, sach thu
nang ma » tang ma, sang ma, nang cao
va danh » va dinh, va dan, va hanh
ty nang » ky nang, ty xang, ty hang
ma hoi » mai hoi, xa hoi, ma hoa
xuc va » duc va, tuc va, luc va
van ve » van de, ban ve, van le

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ty nang ma hoi. thien ((thien cac) or (vien cac)) xuc va danh van ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ty nang ma hoi. thien ((thien cac) OR (vien cac)) xuc va danh van ve triet.
• Adding a wildcard symbol may retrieve word variants: toc sach ty nang ma hoi. thien ((thien cac) or (vien cac)) xuc va danh van ve triet*.